drivers); } public function names() { return array_keys($this->drivers); } public function get($name) { return array_get($this->drivers, $name); } public function register($name, $driver) { $this->drivers[$name] = is_callable($driver) ? call_user_func($driver) : $driver; return $this; } public function count() { return count($this->drivers); } public function isEmpty() { return empty($this->drivers); } public function isNotEmpty() { return ! $this->isEmpty(); } }